<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script type="module" src="index.js"></script>
</head>

<body>
    <div>vue2 Diff</div>
    <div id="container">
        <h1> 这是container</h1>
    </div>
    <button id="btn">按钮</button>
</body>

</html>